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  • Springer Science and Business Media LLC  (2)
  • Frontiers S.A.  (1)
  • 2020-2024  (3)
  • 1935-1939
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  • 2020-2024  (3)
  • 1935-1939
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  • 1
    Publication Date: 2024-01-12
    Description: The tropical forest carbon sink is known to be drought sensitive, but it is \nunclear which forests are the most vulnerable to extreme events. Forests with \nhotter and drier baseline conditions may be protected by prior adaptation, or \nmore vulnerable because they operate closer to physiological limits. Here we \nreport that forests in drier South American climates experienced the greatest \nimpacts of the 2015\xe2\x80\x932016 El Ni\xc3\xb1o, indicating greater vulnerability to extreme \ntemperatures and drought. The long-term, ground-measured tree-by-tree \nresponses of 123 forest plots across tropical South America show that the \nbiomass carbon sink ceased during the event with carbon balance becoming \nindistinguishable from zero (\xe2\x88\x920.02\xe2\x80\x89\xc2\xb1\xe2\x80\x890.37\xe2\x80\x89Mg\xe2\x80\x89C\xe2\x80\x89ha\xe2\x88\x921 per year). However, \nintact tropical South American forests overall were no more sensitive to the \nextreme 2015\xe2\x80\x932016 El Ni\xc3\xb1o than to previous less intense events, remaining a \nkey defence against climate change as long as they are protected.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 2
    Publication Date: 2024-04-30
    Description: In the domain of space science, numerous ground-based and space-borne data of various phenomena have been accumulating rapidly, making analysis and scientific interpretation challenging. However, recent trends in the application of artificial intelligence (AI) have been shown to be promising in the extraction of information or knowledge discovery from these extensive data sets. Coincidentally, preparing these data for use as inputs to the AI algorithms, referred to as AI-readiness, is one of the outstanding challenges in leveraging AI in space science. Preparation of AI-ready data includes, among other aspects: 1) collection (accessing and downloading) of appropriate data representing the various physical parameters associated with the phenomena under study from different repositories; 2) addressing data formats such as conversion from one format to another, data gaps, quality flags and labeling; 3) standardizing metadata and keywords in accordance with NASA archive requirements or other defined standards; 4) processing of raw data such as data normalization, detrending, and data modeling; and 5) documentation of technical aspects such as processing steps, operational assumptions, uncertainties, and instrument profiles. Making all existing data AI-ready within a decade is impractical and data from future missions and investigations exacerbates this. This reveals the urgency to set the standards and start implementing them now. This article presents our perspective on the AI-readiness of space science data and mitigation strategies including definition of AI-readiness for AI applications; prioritization of data sets, storage, and accessibility; and identifying the responsible entity (agencies, private sector, or funded individuals) to undertake the task.
    Description: Published
    Description: 1203598
    Description: OSA3: Climatologia e meteorologia spaziale
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
    Publication Date: 2024-03-19
    Description: Forests are a substantial terrestrial carbon sink, but anthropogenic changes in land \nuse and climate have considerably reduced the scale of this system1 \n. Remote-sensing \nestimates to quantify carbon losses from global forests2\xe2\x80\x935 \n are characterized by \nconsiderable uncertainty and we lack a comprehensive ground-sourced evaluation to \nbenchmark these estimates. Here we combine several ground-sourced6 \n and satellitederived approaches2,7,8 \n to evaluate the scale of the global forest carbon potential \noutside agricultural and urban lands. Despite regional variation, the predictions \ndemonstrated remarkable consistency at a global scale, with only a 12% diference \nbetween the ground-sourced and satellite-derived estimates. At present, global forest \ncarbon storage is markedly under the natural potential, with a total defcit of 226\xe2\x80\x89Gt \n(model range\xe2\x80\x89=\xe2\x80\x89151\xe2\x80\x93363\xe2\x80\x89Gt) in areas with low human footprint. Most (61%, 139\xe2\x80\x89Gt\xe2\x80\x89C) \nof this potential is in areas with existing forests, in which ecosystem protection can \nallow forests to recover to maturity. The remaining 39% (87\xe2\x80\x89Gt\xe2\x80\x89C) of potential lies in \nregions in which forests have been removed or fragmented. Although forests cannot \nbe a substitute for emissions reductions, our results support the idea2,3,9 \n that the \nconservation, restoration and sustainable management of diverse forests ofer \nvaluable contributions to meeting global climate and biodiversity targets.
    Keywords: Multidisciplinary
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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